Vernon County
Population 19,946 (2025) 826 sq mi
Property owners in Vernon County have filed 12 federal flood insurance claims since 1978, 85th most of 115 counties in Missouri.
Hazard fingerprint Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed
- Tornado damage paths since 195030
At a glance
The record for Vernon County in eight numbers. Each links to its section below.
Tornadoes since 1950
30
39th of 115 in Missouri
About as many as the typical Missouri county
DetailsStrongest tornado
F3
March 15, 1982, 70.0 mile path
Federal disaster declarations
26
Most recent: Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, 2026
DetailsSnowiest season
28.5in
Winter of 1959-60
Tornadoes
About one every 2.5 years since 1950, 3 of them rated F3/EF3 or stronger.
Strongest
March 15, 1982
F3, 70.0 mile path
600 yards wide; 2 killed along the whole path.
Most recent
Wednesday, April 2, 2025
EF1, 16.6 mile path
Within the past year.
Every recorded tornado
| Apr 2, 2025 | EF1 | 16.6 | 0 | 0 |
| Apr 2, 2025 | EF2 | 6.5 | 0 | 0 |
| Apr 26, 2024 | EF1 | 3.4 | 0 | 0 |
| Aug 19, 2018 | EF1 | 1.0 | 0 | 0 |
| Aug 19, 2018 | EF0 | 0.1 | 0 | 0 |
| Apr 27, 2014 | EF0 | 0.3 | 0 | 0 |
| Jun 10, 2009 | EF0 | 1.4 | 0 | 0 |
| Jun 2, 2008 | EF0 | 10.6 | 1 | 0 |
| Mar 31, 2008 | EF0 | 0.2 | 0 | 0 |
| Apr 27, 2007 | EF0 | 12.9 | 0 | 0 |
| May 3, 2006 | F0 | 11.0 | 0 | 0 |
| Mar 12, 2006 | F2 | 38.0 | 7 | 1 |
| May 6, 2003 | F0 | 0.2 | 0 | 0 |
| May 4, 2003 | F0 | 0.2 | 0 | 0 |
| May 17, 1995 | F3 | 14.0 | 9 | 0 |
| Jul 4, 1992 | F1 | 1.0 | 0 | 0 |
| Feb 14, 1992 | F0 | 0.2 | 0 | 0 |
| Feb 14, 1992 | F1 | 16.0 | 0 | 0 |
| Apr 27, 1984 | F0 | 0.3 | 0 | 0 |
| Dec 1, 1982 | F1 | 29.0 | 5 | 0 |
| Mar 15, 1982 | F3 | 70.0 | 8 | 2 |
| May 23, 1981 | F0 | 0.5 | 0 | 0 |
| Apr 26, 1969 | F0 | 0.1 | 0 | 0 |
| Oct 6, 1962 | F1 | 5.1 | 0 | 0 |
| Nov 17, 1958 | F3 | 30.2 | 1 | 0 |
| Jul 13, 1958 | F1 | 5.2 | 0 | 0 |
| May 31, 1958 | F2 | 6.4 | 0 | 0 |
| May 13, 1956 | F0 | 0.2 | 0 | 0 |
| Sep 4, 1954 | F1 | 1.0 | 0 | 0 |
| May 31, 1954 | F1 | 0.5 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Vernon County: 0.
- Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.
Storm Prediction Center severe weather database, 1950 to 2025.
Hurricanes and tropical storms
No tropical storm or hurricane has tracked within 100 miles since records began in 1851.
Wildfire and smoke
No large wildfire has been mapped here since satellite mapping began in 1984.
Smoke overhead
Smokiest year
2023: 62 days
Heavy smoke on 14 days in 2021, the most of any year.
Last 10 years
21.8 days a year
Medium or heavy smoke, 2016 to 2025.
2025
17 days
Medium or heavy smoke. 33 so far in 2026.
- A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.
NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.
Floods and flood insurance
12 federal flood insurance claims since 1993, with $93,000 paid.
Most claims in one year
1994: 5 claims
$50,000 paid.
Claims by ZIP code
| 64790 | 5 | $38,000 |
Flood events since 1996
- Flash Flood81
- Flood40
- Heavy Rain11
1 death recorded in flood events since 1996.
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.
River crests
Most severe crest
July 2, 2007
Marmaton River near Nevada, 33.17 ft
13.17 feet above the 20.0 ft flood stage; major flooding by today’s categories.
Most recent moderate or major crest
May 8, 2022
Little Osage River at Horton, 45.61 ft
Moderate flooding.
River gauges
| Little Osage River at Horton | 41.0 | 53.37 ft | 2 |
| Marmaton River near Nevada | 20.0 | 33.17 ft | 1 |
| Marmaton River near Richards | 23.0 | 34.68 ft | 0 |
- Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.
NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.
Drought
In severe drought or worse for 121 of 1,581 months since 1895 (8%); the longest spell lasted 20 months.
121
Months in severe drought or worse since 1895
48
Months in extreme drought
8%
Share of all months, severe or worse
42
Drought reports to the Weather Service since 1996
Lowest reading
August 1934
−6.24, extreme drought
Longest severe spell
20 months
June 1953 to January 1955.
Latest month
September 2026
−1.84, mild drought
Last severe month: March 2024.
- The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.
NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.
Earthquakes
5 earthquakes of magnitude 2.5 or more within 50 miles since 2001; none reached magnitude 4.
0
Magnitude 2.5+ inside the county since 1973
3
Magnitude 3+ within 50 miles since 1973
0
Magnitude 4+ within 50 miles since 1900
0
Magnitude 5+ within 50 miles since 1900
Largest within 50 miles
May 18, 2005
Magnitude 3.3
Missouri; 29.2 miles away, 3.1 miles deep.
Most recent, magnitude 3 or more
September 30, 2014
Magnitude 3.0
9 km SSW of Galesburg, Kansas; 45.6 miles away.
- Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
- Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).
USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.
Severe weather and other events
763 events in the National Weather Service record, 650 of them since 1996.
132
Hail reports, 1 inch or larger
14
Hail, 2 inches or larger
167
Damaging gusts, 58 mph+
49
Winter weather events since 1996
10
Heat events since 1996
10
Cold events since 1996
Largest hail
May 4, 2003
2.75 inches
Strongest measured or estimated gust
August 21, 2003
92 mph
More event types since 1996
| Lightning | 1 | 0 |
Costliest events since 1996
- Apr 26, 2026Hail$25.0 million
National Weather Service narrative
A severe thunderstorm produced hail from golf ball to tennis balls in size over a swath nearly 32 miles in length from south of Nevada, MO to locations north and east of Nevada. Along this mostly rural path, damage occurred to some roofs of homes and structures, vehicles, multiple RV's, equipment and crops.
- Nov 1, 2025Drought, Vernon$8.5 million
National Weather Service narrative
Though below the monthly average, timely rain fell across the region through the month. This allowed for drought improvements to Moderate (D1) drought by the end of the month. Impacts across the region were largely limited to larger scale agriculture. However, farm and stock ponds saw impacts with ground water levels also falling. Crop loss estimates notated are for fall harvest loses from the summer into the fall.
- Apr 2, 2025Tornado$1.2 million
National Weather Service narrative
A National Weather Service Storm survey determined that an EF-1 tornado touched down north of Bronaugh and tracked northeast on a route just east of a separate tornado that tracked through the Moundville area. Based upon radar, satellite imagery and ground surveys, the Bronaugh tornado caught up to the initial tornado then continued through Nevada and lifted west of Walker. In it���s early stages, two separate tornado debris signatures were detected by the KSGF 88D radar. Initially causing damage only to trees and barns, the tornado damaged several homes and outbuildings as it tracked toward Nevada, damaged numerous businesses as it crossed Highway 54 at Nevada. The tornado…
- Apr 21, 2022Hail$1.0 million
National Weather Service narrative
Half dollar sized hail was reported via MPing. Hail combined with an estimated 50 mph winds damaged 300-400 vehicles along with numerous roofs.
- Dec 9, 2007Ice Storm, Vernon$750,000
National Weather Service narrative
Ice accumulations up to one and a half inches were observed across southern Vernon County. Rural areas of southeast Vernon County and the communities of Sheldon and Montevallo were hit the hardest, and widespread power outages occurred for several days. Major tree and power line damage resulted. Further north toward Nevada and other sections of the county, ice accumulations ranging from one quarter of an inch to three quarters of an inch were observed.
- Mar 12, 2006Tornado$700,000
National Weather Service narrative
A supercell thunderstorm produced a tornado that intially touched down east of Sheldon. The tornado tracked across rural southeast Vernon County, destroying six homes, and one church located near Virgil City. The tornado extended into Cedar County.
- Apr 7, 2013Hail$500,000
National Weather Service narrative
Golf ball size hail broke windows. The estimate damage cost for the entire county including the city of Nevada will be included in this report.
- Apr 2, 2025Tornado$500,000
National Weather Service narrative
A NWS survey team found EF2 tornado damage to a home along Highway F to the southwest of Moundville. The tornado moved northeast damaging a few more homes along with barns and numerous trees as it tracked west and north of Moundville. A second tornado that touched down near the same time to the southeast of this path eventually tracked toward and passed the initial tornado to its east as determined by ground surveys and satellite damage imagery. This second tornado tracked into the Nevada area causing extensive damage.
- Aug 1, 2012Drought, Vernon$450,000
National Weather Service narrative
The U.S Drought Monitor continued to report Extreme Drought (D3) to Exceptional Drought (D4) throughout the month of August. The region started seeing some rainfall by the end of the month. The COOP station near Horton reported 2.87 of rainfall for the month of August. This is a continuation of the drought that began across the region in June. As a result of the limited rainfall combined with the excessive heat, the USDA Service center in Vernon County indicated that crop losses were 75 percent of the spring planting. Many farmers and ranchers reported having to feed hay as pastures stopped growing and became dry through the month which added to operation costs. Monetary crop loss…
- Jan 30, 2002Ice Storm, Vernon$200,000
National Weather Service narrative
A large scale ice storm event developed over southeast Kansas and west central Missouri during the early morning hours of January 30, 2002. Synoptically, a shallow arctic air mass moved through the region dropping surface temperatures in the upper 20s. Strong jet stream winds from the southwest provided the influx of sub-tropical type regime. In addition, deep moisture from the Gulf of Mexico surged northward above this shallow arctic air mass to set the stage for a prolonged ice storm.Light to moderate rainfall, fell over the sub-freezing surface temperatures for nearly 36 hours. Ice begun accumulating on trees and power lines from southeast Kansas, and into west central Missouri…
- Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.
NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.
Weather records
From Nevada Water Plant, 2 miles from the county’s population centre, with records from 1898.
- All-time high
- 117°FJul 18, 1936
- All-time low
- −27°FFeb 12, 1899
- Warmest night
- 86°FAug 1, 1934
- Coldest day
- 0°F2 times, most recently Jan 15, 2024
- Wettest day
- 10.65 inApr 11, 1994
- Snowiest day
- 18.9 inNov 6, 1951
- Hottest year
- 1953mean 62.8°F
- Coldest year
- 1989mean 53.8°F
- Wettest year
- 201970.12 in
- Driest year
- 196321.68 in
- Snowiest season
- 28.5 in1959-60
Median first snow
December 12
Earliest: October 28, 1925
Median last snow
March 1
Latest: April 15, 1980
0 of 98 winters had no measurable snow.
Station Nevada Water Plant (USC00235987), 871 ft elevation, 2.0 miles from the population centre. Daily records from 1898 to October 27, 2026; 99.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.
NOAA NCEI Global Historical Climatology Network Daily.
Federal disaster declarations
26 since 1953. The most recent: Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, August 3, 2026.
| Aug 3, 2026 | Severe Storm | DR-4929-MO |
| Jul 22, 2025 | Severe Storm | DR-4885-MO |
| May 21, 2025 | Severe Storm | DR-4872-MO |
| Sep 21, 2023 | Severe Storm | DR-4741-MO |
| Mar 26, 2020 | Biological | DR-4490-MO |
| Mar 13, 2020 | Biological | EM-3482-MO |
| Jul 9, 2019 | Severe Storm | DR-4451-MO |
| Jan 2, 2016 | Flood | EM-3374-MO |
| Mar 23, 2011 | Severe Storm | DR-1961-MO |
| Feb 3, 2011 | Severe Storm | EM-3317-MO |
| Jun 19, 2009 | Severe Storm | DR-1847-MO |
| Jan 30, 2009 | Severe Ice Storm | EM-3303-MO |
| Jun 25, 2008 | Severe Storm | DR-1773-MO |
| Mar 19, 2008 | Severe Storm | DR-1749-MO |
| Dec 12, 2007 | Severe Ice Storm | EM-3281-MO |
| Mar 16, 2006 | Severe Storm | DR-1631-MO |
| Sep 10, 2005 | Hurricane | EM-3232-MO |
| Jun 11, 2004 | Severe Storm | DR-1524-MO |
| May 6, 2003 | Severe Storm | DR-1463-MO |
| May 6, 2002 | Severe Storm | DR-1412-MO |
| Feb 6, 2002 | Severe Ice Storm | DR-1403-MO |
| Jun 2, 1995 | Severe Storm | DR-1054-MO |
| Apr 21, 1994 | Severe Storm | DR-1023-MO |
| Jul 9, 1993 | Flood | DR-995-MO |
| Oct 14, 1986 | Flood | DR-779-MO |
| Sep 24, 1976 | Drought | EM-3017-MO |
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.
How this compares
Where Vernon County stands among 115 counties in Missouri and 3,143 in the United States.
| Tornadoes since 1950 | 30 | 39 / 115 |
| Tornadoes rated F3/EF3 or stronger | 3 | 27 / 115 |
| Tropical cyclones within 50 mi | 0 | — |
| Hurricane-strength passes within 50 mi | 0 | — |
| Wildfire acres since 1984 | 0 | — |
| Flood insurance claims | 12 | 85 / 115 |
| Flood insurance paid | $93,000 | 95 / 115 |
| Disaster declarations | 26 | 38 / 115 |
| Flood events since 1996 | 132 | 34 / 115 |
| Hail and wind events since 1996 | 392 | 25 / 115 |
| Winter storm events since 1996 | 49 | 79 / 115 |
| Reported damage since 1996 | $40.9 million | 37 / 115 |
| River crests at major flood stage | 3 | 51 / 115 |
| High tide flooding days a year, last 10 years | 0.0 | — |
| Months in severe drought since 1895 | 121 | 63 / 115 |
| Medium or heavy smoke days a year, last 10 years | 21.8 | 61 / 115 |
| Earthquakes M4+ within 50 mi since 1900 | 0 | — |
| Earthquakes M2.5+ in the county since 1973 | 0 | — |
Neighbouring counties
| Barton County | 39 | 0 |
| Bates County | 28 | 0 |
| Bourbon County KS | 20 | 0 |
| Cedar County | 20 | 0 |
| Crawford County KS | 38 | 0 |
| Linn County KS | 14 | 0 |
| St. Clair County | 25 | 0 |
Sources and vintage
Every number on this page comes from these public records.
- Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
- Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
- Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
- Storm events NOAA NCEI Storm Events Database, through 2026.
- Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
- Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
- Weather records NOAA NCEI Global Historical Climatology Network Daily, station USC00235987.
- River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
- Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
- Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
- Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.
Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.